Bihar Chief Minister Nitish Kumar on Tuesday asked Prime Minister Narendra Modi to "stop the rhetoric (and) chest thumping", and deliver the promises he made ahead of the Lok Sabha polls."Show moral courage. Accept insufficiencies in delivering on old promises," the Janata Dal-United leader said in a series of tweets, ahead of Modi's election rally in Bhagalpur."Respect the sentiments of the people of Bihar who have been troubled by your unkept promises and unsavoury comments," he said.Asking Modi to take back "your derogatory words" made in earlier speeches, he said: "Deliver your promise of special status to Bihar. Don’t mislead with so-called package where 86 percent is repackaged old schemes."Live up to your 2014 election promise of decriminalization and announce (that) no ticket (will be given) to candidates with criminal background."The Bharatiya Janata Party and its allies will be pitted in the coming assembly elections against the ruling Janata Dal-United and its allies the Rashtriya Janata Dal and the Congress.